/**
 * Copyright 2009-2017 the original author or authors.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.lab1024.smartdb.mapping.handler.type;

import java.sql.ResultSet;
import java.sql.SQLException;

public class EnumTypeHandler<E extends Enum<E>> implements TypeHandler<E> {

    private final Class<E> type;

    public EnumTypeHandler(Class<E> type) {
        if (type == null) {
            throw new IllegalArgumentException("Type argument cannot be null");
        }
        this.type = type;
    }


    @Override
    public E getResult(ResultSet rs, int columnIndex, JdbcType jdbcType) throws SQLException {
        String s = rs.getString(columnIndex);
        return s == null ? null : Enum.valueOf(type, s);
    }

    @Override
    public E getResult(ResultSet rs, String columnName, JdbcType jdbcType) throws SQLException {
        String s = rs.getString(columnName);
        return s == null ? null : Enum.valueOf(type, s);
    }
}